B Appendix B. Using System V shared memory Each running instance of IBM Lotus Domino consists of several cooperating processes that share information with each other by placing it in memory areas that are accessible to all the processes. Domino on Solaris can use either of two mechanisms to implement memory sharing. If you take no special action Domino uses mmap'ed files , which are convenient and easy to manage. This appendix describes how to use System V shared memory , an alternative that is somewhat trickier to manage but offers some advantages. You can switch all of your Domino partitions to System V shared memory at the same time, or you can change them one by one. If you operate some lightly loaded partitions with highly variable loads, it may be convenient to let them continue to use mmap'ed memory indefinitely. © Copyright IBM Corp. 2006. All rights reserved. 521